Smart body fat scale



FIG. 1 is a Front elevational view of a smart body fat scale showing my new design;

FIG. 2 is a Rear elevational view thereof;

FIG. 3 is a Left side view thereof;

FIG. 4 is a Right side view thereof;

FIG. 5 is a Top plan view thereof; and,

FIG. 6 is a Bottom plan view thereof.

The broken lines in the drawing depict portions of the smart body fat scale that form no part of the claimed design. 

CLAIM The ornamental design for a smart body fat scale, as shown and described. 